<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
		<title></title>
		<script type="text/javascript">
			var a = 3;
//			a += 5;
			//相当于a = a+5;
	
			a *= 8;
			//相当于 a=a*8
			document.write(a);
		</script>
	</head>
	<body>

	</body>
</html>
